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valina [46]
3 years ago
9

The climate of the earth throughout history has always _____.

Physics
2 answers:
Vlad [161]3 years ago
7 0

Answer:

The climate of the earth throughout history has always been <em><u>fluctuated between hot and cold periods. </u></em>

bazaltina [42]3 years ago
5 0
D!!!!!!!!!!!!!!!! IS the answer
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The most common metric of a sound wave is frequency.  This is the rate at which the change in pressure occurs, and is measured in cycles per second, formally known as "hertz".  The period is the inverse of frequency andl has the units of seconds per cycle, commonly stated simply as seconds.

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